{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["machine or equipment", "material", "manufacturing standard", "engineering feature", "process parameter", "biomedical"], "input": "During the process , successive layers of metal powder are fully melted and consolidated on top of each other ."}
{"machine or equipment": [], "material": ["metal powder"], "manufacturing standard": [], "engineering feature": [], "process parameter": [], "biomedical": []}